This patch allows the PL/Python module to do (SRF) functions.

The patch was taken from the CVS version.

I have modified the plpython.c file and have added a test sql script for
testing the functionality. It was actually the script that was in the
8.0.3 version but have since been removed.

In order to signal the end of a set, the called python function must
simply return plpy.EndOfSet and the set would be returned.

Gerrit van Dyk

src/pl/plpython/sql/plpython_setof.sql

@@ -0,0 +1,12 @@
+
+CREATE or replace FUNCTION test_setof() returns setof text
+	AS
+'if GD.has_key("calls"):
+	GD["calls"] = GD["calls"] + 1
+	if GD["calls"] > 2:
+		del GD["calls"]
+		return plpy.EndOfSet
+else:
+	GD["calls"] = 1
+return str(GD["calls"])'
+	LANGUAGE plpythonu;